That's IRIX, not Unix v4. Not sure how it was implemented on that OS, but likely the way we rocked "transparent" terminals in Linux in the early 2000s: the terminal looked at the part of the root window (a.k.a. "desktop") it was over, copied the bitmap corresponding to the region of the root window it was covering, tinted it, and used it as the background for the terminal.
So, as long as there were no other windows beneath the terminal, it looked transparent. It lagged a little bit, because it had to constantly yank the root window bitmap, but it worked.
But as soon as you had another window beneath the terminal, it "punched through" that window and ruined the illusion.
IIRC, urxvt and maybe Eterm still have that option today. I used it as recently as 2021-2.
Clarification: the terminal is IRIX's. What it's displaying is Unix "V4"
Frehi
in reply to /usr/people/flexion • • •R.L. Dane 🍵
in reply to Frehi • • •That's IRIX, not Unix v4. Not sure how it was implemented on that OS, but likely the way we rocked "transparent" terminals in Linux in the early 2000s: the terminal looked at the part of the root window (a.k.a. "desktop") it was over, copied the bitmap corresponding to the region of the root window it was covering, tinted it, and used it as the background for the terminal.
So, as long as there were no other windows beneath the terminal, it looked transparent. It lagged a little bit, because it had to constantly yank the root window bitmap, but it worked.
But as soon as you had another window beneath the terminal, it "punched through" that window and ruined the illusion.
IIRC, urxvt and maybe Eterm still have that option today. I used it as recently as 2021-2.
Clarification: the terminal is IRIX's. What it's displaying is Unix "V4"
JdeBP reshared this.
R.L. Dane 🍵
in reply to /usr/people/flexion • • •James Gilbert
in reply to R.L. Dane 🍵 • • •UNIX Fourth Edition
squoze.netR.L. Dane 🍵
in reply to James Gilbert • • •John Rohde Jensen
in reply to /usr/people/flexion • • •Colin
in reply to John Rohde Jensen • • •crazy what can be achieved when you combine nerd forces in an enclosed space for a short while.
Basically this on steroids I guess xkcd.com/356/
Nerd Sniping
xkcdDave Rahardja
in reply to /usr/people/flexion • • •𝚜𝚎𝚕𝚎𝚊
in reply to /usr/people/flexion • • •@bagder
GNU/exausto
in reply to 𝚜𝚎𝚕𝚎𝚊 • • •John Doe
in reply to /usr/people/flexion • • •Michael Engel
in reply to John Doe • • •JdeBP
in reply to Michael Engel • • •@johndoe99077
Aficionados will remember /vmunix for #Unix with demand paged virtual memory.
To this day, the #OpenBSD and #NetBSD kernels likewise live in single files in the root directory.
man.netbsd.org/boot.8#FILES
@me_ @flexion
boot(8) - NetBSD Manual Pages
man.netbsd.orgMatthias Schmidt (#9570)
in reply to JdeBP • • •However, the size has change a bit compared to back then :)